There were incredible scenes at Education City Stadium in Al Rayyan as South Korea came from behind to win 2-1 against Portugal, for whom Dalot played the full 90 minutes. His fellow Red, Bruno Fernandes, was rested as an unused substitute.
The shock outcome means the Koreans defied the odds to go through as Group H runners-up after pipping Facundo Pellistri's Uruguay on goals scored.
The score was locked at 1-1 from just before the half-hour mark until the first minute of second-half injury time, when Spurs forward Son Heung-Min launched one of his trademark counter attacks into the opposition half and slotted a perfect pass through for Hwang Hee-chan to steer in the winner.